Cesium carbonate → Methyl 4-nitrobenzyl ether
Reaktionsgleichung
FC(F)(F)S(O[C:7]1[CH:12]=[CH:11][C:10]([N+:13]([O-:15])=[O:14])=[CH:9][CH:8]=1)(=O)=O.[O:18]1[CH2:23]COC[CH2:19]1.C(=O)([O-])[O-].[Cs+].[Cs+].C1(C)C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C>C([O-])(=O)C.[Pd+2].C([O-])(=O)C.CCCCCCC.O>[CH3:19][O:18][CH2:23][C:7]1[CH:12]=[CH:11][C:10]([N+:13]([O-:15])=[O:14])=[CH:9][CH:8]=1Komponenten
Edukt 4
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 3
Reaktionsbedingungen
- Temperatur
- 95 °C
Versuchsvorschrift
To a mixture of 4-nitrophenyl trifluoromethanesulfonate (30 mg, 0.11 mmol) and 1,4-dioxane (3 ml) were added water (0.3 ml), cesium carbonate (0.11 g, 0.34 mmol), potassium methoxymethyl trifluoroborate (17 mg, 0.11 mmol),palladium (II) acetate (1.3 mg, 0.0056 mmol) and tri-o-tolylphosphine (8.5 mg, 0.028 mmol). Then, the reaction mixture was stirred at 95° C. (external temperature) for 4 hours. After the reaction mixture was cooled at room temperature, water and heptane were added to the mixture, and the organic layer was separated. The organic layer was filtered, and the solvent was distilled off under reduced pressure. The residue was purified by NH-silica gel column chromatography (heptane:ethyl acetate=10:1) to obtain the title compound (13 mg, 0.078 mmol, 68%).
Aufarbeitung
- temperatureAfter the reaction mixture was cooled at room temperature
- customthe organic layer was separated
- filtrationThe organic layer was filtered
- distillationthe solvent was distilled off under reduced pressure
- customThe residue was purified by NH-silica gel column chromatography (heptane:ethyl acetate=10:1)
Quellen und Nachweise
- ORD-Eintrag
- ord-6fab8db13c6e43bcb669e4b6e7648165
- Quelldatensatz
- uspto-grants-2010_04
- Patentnummer
- US07696347B2
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